Abrasive



June 9, 1925.

T. R. HElNTZ ABRASIVE uled Feb. 28, 1924 fill/511701' THEOQORE R. 11E/NT2.

l A r Patented June 9, 1925.

UNITED STATES l l1,540,987 PATENT orner..

THEODO'RE It. HEINTZ, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, T0 HEINTZLABORATORIES, INC., OF LAS VEGAS, NEVADA,

A conformaron or NEVADA.

^ ABRASIVE.

Application led February 28, 1924. Serial No. 695,663.

Toall whom it may concern.'

Be it known that I, THnoDoRE R. HEINTZ, a citizenof the United States, residing at the city and county'of San Francisco and State of California, have invented new and useful Improvements in Abrasives, of which` the 'following is a specification.

This invention relates to an abrasive, and

l especially to a type thereof which is composed entirely of an abrasive metallic' material.

The object of the present invention is to generally improve and simplify the construction and operation of abrasives of the character described, and particularly to provide an abrasive matt of general utility and capable of a wide range of use; for instance, in the wood-working and painting industries for smoothing or rubbing 'down sur- -faces requiring a polished finish, and which is also adapted for use in the home or other wise as an abrasive agent for cleaning pots, pans, etc.

The invention more specifically stated ernbodies a padl composed of a ribbon like formation of interwoven metallic threads. Cut threads extending from end to end of the ribbon are employed and they are substantially rectangular shape in cross-section to present four cutting edges. The threads of which the ribbon is formed are otherwise corrugated throughout their length, and they are furthermore folded upon one another to form a compact pad of suitable thickness. i

For the purpose of clearly describing and illustrating the invention, reference will be made to the specification and drawings, in which- Fig. 1 is a perspective view of the abrasive p Fig. 2 is a plan vieu7 of the ribbon from which the pad is formed before the ribbon is corrugated and folded.

Fig. 3 is an'edge view of the ribbon after the threads have been interwoven and corrugated.

Fig. 4 is an enlarged cross-section of one of the metallic threads.

Referring to the dran-'ings in detail, and particularly to Fig. 1, A indicates, in general, an abrasive pad which is formed from a series of cut metallic threads, the threads being interwoven and corrugated to form a strength as the sheet or sheets from which they are cut are rolled lengthwise so that the grain of the metalwill be similarly disposed. The threads when cut are assembled 1n a ribbon like formation as shown in Fig. 2. They are not disposed in parallelism but are conversely indiscriminately arranged so that the threads cross one another throughout their length as much as possible. The

ribbon thus formed is next passed between a pair of corrugatmg rollers or a similar mechanism and they are thus corrugated throughout their length as indicated at 3 in`Fig. 3. The ribbon is then folded upon itself as shown in Fig. 1 and a compact pad of suitable thickness is produced. The pad thus, formed is ready for commercial use and the pads may be individually wrapped or otherwise for shipping and retail sale.

The pads, as previously stated, are wholly composed of metallic material, preferably in the form of threads extending from end to end thereof, and as the threads are interlocked, first, by crossing them with relation to each other, and secondly, by corrugating them, separation of the strands is practically prevented. Corrugation of the strands or threads is of further importance as it produces a series of raised surfaces Which materially improve the abrasive action of the pad.

Practical experience shows that the `pad has a wide range of utility as it4 may not only be used to advantage in various branches of the wood-working industry, but

it has also proven equally useful in the the pads intended for home use are preferably constructed of a non-corrosive material, such as commercial zinc, it is obvious that the saine-may be considered as entirely `sanitary as poisonous oxides or salts are not formed. In other Words, ordinary cleanliness is all thatl is required to maintain the pad in a sanitary condition.

While commercial zinc has been particularly referred to, it is obvious that other metals may be employed, and similarly that the degree of hardness may be increased or decreased by alloying the metal or other- Wise treating the same as dilerent'materials treated require different degrees of hardness When abrasive action is considered. Various results may also be obtained by varying the ineness of the thread. I therefore Wish it understood that the particular type of metal employed, and the degree of hardness or iineness sought, may be varied, and that changes in detail of assembling and structure may be resorted to Within the scope of the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is- 1. A pad of the class described consisting of a ribbon of interwoven metallic threads extending longitudinally of the ribbon, the latter being folded on itself to form a pad.

2. A pad of the class described consisting of a ribbon of interwoven single cut threads substantially rectangular in cross section to form four cutting edges and eX- tending longitudinally of the ribbon, the latter being folded on itself to form a pad.

3. A pad of the class described consisting of a ribbon of interwoven metallic threads extending longitudinally of the ribbon, the latter being corrugated transversely and being folded to form a pad.

4:. A- pad of the class described consisting of a ribbon of interwoven metallic threads extending longitudinally of the ribbon, the latter being corrugated transversely and folded by a plurality of transver se bands to form a pad and to conceal the ends of the threads within the pad.

5. A device of the character described, comprising a plurality of cut metallic threads arranged in a ribbon like formation and interwoven, said ribbon being corrugated from end to end with the corrugations running crosswise thereof, and said ribbon being interfolded to form apad.

THEODORE R. HEINTZ. 

